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251938-83-7

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251938-83-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 251938-83-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,1,9,3 and 8 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 251938-83:
(8*2)+(7*5)+(6*1)+(5*9)+(4*3)+(3*8)+(2*8)+(1*3)=157
157 % 10 = 7
So 251938-83-7 is a valid CAS Registry Number.

251938-83-7Upstream product

251938-83-7Downstream Products

251938-83-7Relevant academic research and scientific papers

Stereoselective, oxidative C-C bond coupling of naphthopyran induced by DDQ: Stereocontrolled total synthesis of deoxyfrenolicin

Xu, Yao-Chang,Kohlman, Dan T.,Liang, Sidney X.,Erikkson, Chad

, p. 1599 - 1602 (2008/02/10)

(matrix presented). A formal total synthesis of pyranonaphthoquinone natural product deoxyfrenolicin 1 is described. The key step in the synthesis involves the use of stereoselective 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ)-induced C-C bond couplin

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